Operation on a Resource after Expiration or Release Affecting qemu-guest-agent package, versions *


Severity

Recommended
0.0
high
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.11% (45th percentile)

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  • Snyk IDSNYK-RHEL6-QEMUGUESTAGENT-3261336
  • published26 Jul 2021
  • disclosed18 May 2011

Introduced: 18 May 2011

CVE-2011-1751  (opens in a new tab)
CWE-672  (opens in a new tab)
CWE-119  (opens in a new tab)

How to fix?

There is no fixed version for RHEL:6 qemu-guest-agent.

NVD Description

Note: Versions mentioned in the description apply only to the upstream qemu-guest-agent package and not the qemu-guest-agent package as distributed by RHEL. See How to fix? for RHEL:6 relevant fixed versions and status.

The pciej_write function in hw/acpi_piix4.c in the PIIX4 Power Management emulation in qemu-kvm does not check if a device is hotpluggable before unplugging the PCI-ISA bridge, which allows privileged guest users to cause a denial of service (guest crash) and possibly execute arbitrary code by sending a crafted value to the 0xae08 (PCI_EJ_BASE) I/O port, which leads to a use-after-free related to "active qemu timers."

CVSS Scores

version 3.1